Finding the Fourth Proportional to 12,586.73, 17,364.65 and 8,113.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.73 : 17,364.65 = 8,113.10 : x
2. Step 2: Convert to fraction form
   12,586.73/17,364.65 = 8,113.10/x
3. Step 3: Cross multiply
   12,586.73x = 17,364.65 × 8,113.10
4. Step 4: Simplify right side
   12,586.73x = 140,881,014.53
5. Step 5: Solve for x
   x = 140,881,014.53/12,586.73
6. Step 6: Final answer
   x = 11,192.83